Lock set



Oct. 12, 1954 E. SCHLAGE 2,691,290

LOCK SET y Filed July 3, 1950 2 Sheets-Sheet 1 FIE... :1

36 44 Q INVENTOR.

EBA/8 TL. Saunas By K 7 y 4r aka/5r E. L. SCHLAGE Oct. 12, 1954 LOCK SET 2. Sheets-Sheet 2 Filed July 3, 1950 V INVENTOR. EeA/EsTL. SCHLAGE H7 4 n r 1- \IW lrrakwsr Patented Oct. 12, 1954 LOCK SET Ernest L.. Schlage, Burlingame, Califi, assignor to Schlage Lock Company, a corporation Application. 3, 19.50, Serial N 0... 171,784;

6 Claims.

' My invention relates to. hardware, particularly door locks. andv is concerned with a. lock set provided with. a lock or latch bolt. operable from either side or both sides of the. door.

In. lock installationsthe lock components, customarily a latch bolt and, one or two actuating devices are supported in the door by mounting the latch bolt through. the edge. of the door and by mounting. the actuating devices through either or both of the side faces of the door. Door thick.- nesses vary considerably, the usual range being from approximately one and aquarter inches to approximately two inches. There are occasional variations beyond these values but those mentionedv define the, customary range. Sometimes doors of diiierent thickness are accommodated by a special series of lock sets having different kinds or sizes of mountings. I An object of my invention is to provide a. lock set that can be installed without change on doors of varying thickness, particularly those within. the range mentioned.

Another object oi my invention. is. to provide a. lock set mounted and handled in. substantially the customary way yet readily accommodating, itself to mounting on any door no matter what its thickness, within a wide range.

A further. object or my invention is-toprovide an improved lock set.

An additional object of inventionis to, provide a lock. set that can be operated fromv one side or the other or from both sides. regardless of the thickness of the door and. without substantial change in the lock set itself.

A still further object of my invention is to provide a lock'set comprised of substantially standar'dized or customary parts and adaptable to mounting on doors of different thickness.

A'still further object of my invention is to provide a lock set in which different types of actuating devices, such as keys or turn knobs, canbe utilizedinterchangeably.

Other objects, together with the foregoing, are attained'in the embodiment of the invention described in the. accompanying description. and illustrated in the accompanying drawings in which Figure 1 is ahorizontal cross section through a relatively thin door showing in plan a lock. set installed therein in accordance with my invention, the drawing being approximately to scale.

Figure 2 is a horizontal cross section through a relatively thick door showing a lock set installed therein, the drawing being approximately. to scale;

Figure 3 is an isometric view showing one end and side of a spindle bar utilized in my lock set.

Figure 4 is a view comparable to Figure 3 but showing the same end and the other side of the spindle bar.

Figure 5 is a side elevation of an actuating mechanism used in the lock set, a. part. being: broken away to illustrate in cross section on a Figure 6 is a view comparable to Figure 5 and showing the same structure with the spindle bar at approximately 90- degrees to its Figure 5 position.

Figure 7 is a cross section, the plane of which is indicated. by the line VII-VII of Figure 5.

Figure 8 is a cross section, the plane of which is indicated by the line VIII-VIII of the Figure 5, a part being broken away to reduce the figure size.

Figure 9 is across section, the plane of which is indicated by the line IXIX of Figure 2.

In its preferred form, the lock set of my invention is. constructed substantially as illustrated herein and includes a lock unit 6 installed in a thin. door I (Figure 1) in a suitable cylindrical bore 8 extended inwardly from the edge. 9 of the door and provided with a countersunk portion H to receive a stop flange 12. on the lock. unit. A latch. bolt I3 (or a lock bolt) is disposed in and projects fromone. end of the lock unit 6 for re-. ciprocation. On. the. end opposite the latch bolt I3, the. lock unit is provided with an extended anchor I6. comprised. of a foldedstrip to afiord two mounting. walls I! and I8.

The anchor is contoured to providev circular apertures 21 (Figure 9) extending through both of the walls I! and Hi so that they serve as aligned iournals. for an operatingcrank 23. The crank ispreferably av folded sheet. having out-turned, diametrically interrupted annular bosses 24 pro.- jjecting from the opposite sides thereof and retatably mounted within the. apertures 2 I. By that mounting, the crank is disposed for. rotational oscillation. with respect. to the anchor. The crank 23 extends upwardly beyond'the margins of. the walls. ll and 1'8 and its upper end receives a pivot pin 26 joining the crank to a latch bolt retractor bar 21. When, the crank 23 is rotated, the retractor bar 2'] correspondingly reciprocates the latch bolt It.

In the present instance, the lock set is provided with actuators on both sides of the door. The door 7 is provided with a transverse bore 3| extending from side to side. thereof and intersecting the bore 8. The anchor and crank mechanism extend into the bore 3| which also accommodates part of'an exterior actuator 3'2 and, part of an interior actuator33. The actuators 3.2 and 33 may be any one or any combination of several diiierent types. As illustrated, they are both provided with keys 34 and 36 each efiectiveto rotate. its associated one of the actuator barrels 3'1 and'38. In place of the keys 34' and 3B, or either of them,

I' sometimes provide a thumb turnor a knob, not

shown, or other mechanism'efiective to produce rotation of the cylinder barrels 3'! and 38.

The actuator 32' is provided with an extended leg 6st. internally threaded to constitute a socket and is further providedv with a passage for a through screw 42... Similarly, the actuator '33 is provided with an extended, threaded leg 43 for receiving the screw 42 and is provided with a passage for a screw 44 engaging the interior of the leg 4|. dicated and when the two screws 42 and :34 are engaged and tightened, the two actuators are held firmly to the opposite sides of the door. Usually, the leg 43 extends through an appropriate aperture in the anchor l6 and the leg 4| occupies a cut out portion of the anchor. The actuating units therefor also locate and hold the lock unit 6. The length of the screws 42 and 44 and of the legs 4i and 43 is such that the actuating units 32 and 33 can be closely spaced in the case of a thin door, as illustrated in Figure 1, or can be remotely spaced in the case of a thick door, as illustrated in Figure 2, or can occupy any intermediate position. In all circumstances, the lock unit 6 is disposed substantially centrally between the two actuator units which themselves usually bear a symmetrical relationship on opposite sides of a door of any reasonable thickness.

While a wide variation in door thickness can be accommodated without any auxiliary apparatus, it is usually simpler to provide ornamental escutcheon rings or roses both for improved appearance and somewhat greater stability. For a thin door, as in Figure l, the actuator units are encompassed by a thick ring 46 and by a thin ring 47, while for a thick door, as in Figure 2, only the thick ring 45 is used. By using or omitting rings of this sort, the versatility of the mounting is increased. I

In accordance with my invention, I provide means for interconnecting the actuators with the lock unit. Either one or the other of the actuators can be omitted if desired but in the usual installation both of them are utilized substantially as shown. The construction of the two actuators 32 and 33 is identical so that a description of one of them applies equally to the other. The cylinder barrel 31 of the actuator 32, for example (Figure is provided with a key slot 50 merging with a central recess 5! adapted to accommodate one end of a spindle bar 52. At one end of the spindle bar is a uniformly thick, disclike head 53 having a non-circular, central aperture 54 overlying and in effect keyed to a rectangular extension 56 of the spindle bar, the parts being held together by a riveted portion 5'! and thereby being made substantially integral.

The spindle bar 52 adjacent the head 53 is immediately enlarged in a transverse direction to be transversely symmetrical about a central axis 58 (Figure 6). In a direction at right angles, the spindle bar is generally assymmetrical to provide a shoulder 59 (Figure 5) in abutment with the head 53. On one side of the axis 58 there is provided a notch 61. Beyond the notch 61 the material of the spindle bar is deformed so that one of its side surfaces 52 (Figure 6) lies on or to one side of the axis 58 so that this portion of the spindle bar is not symmetrical. It is, however, rectangular in cross section except for the projection of an integral reenforcing rib 63 itself arcuate in cross section. The ends of the rib 63 are rounded or tapered and at its outermost end the spindle bar is tapered to a substantial point 64.

The spindle bar is held with its head 53 within the recess 5| by a disc 56 having a peripheral flange 67 formed thereon and. disposed against the end of the cylinder barrel 37. A threaded internally flanged, cup 88 engages an external When the parts are assembled as inthread on the cylinder barrel 3! andholds the disc 66 rather loosely in'place. Means are provided for preventing rotation of the disc 66 except in conjunction with rotation of the cylinder barrel 31.

A pin 69 backed by a spring 1| projects from an eccentric bore in the cylinder barrel 3'! to extend through a notch 72 in the edge of the disc 66 and into an appropriate one of a series of scallops 13 on the inner periphery of the flanged cup 68. The end of the pin is tapered and each scallop is slightly smaller than the pin. In assembling the device, the pin 69 is momentarily depressed While the cup 68 is screwed home; The pin is then released and the cup slightly rotated, if necessary, until the tapered pin end jams into a scallop 13 and locks the assembly together for rotation as a unit. The pin 69 servesas a driver for the disc 66 and as an adjustment lock for the cup 68. The axial position of the cylinder barrel 31 in the actuator 32 is partly set by the relationship of the cup 68 and the adjacent face of the actuator. The pin 69 consequently holds this adjustment at the selected spacing, which usually is such that the spindle bar head 53 has a slight play.

Although the spindle bar is mounted for some freedom of movement in all directions, it is confined to rotation with the cylinder barrel. There is an exception to the rotary confinement of the spindle bar. The disc 66 is provided with a central aperture 16 (Figure 7) having an armate portion 11 slightly more than a half circle in extent and another arcuate portion 18 slightly less than a half circle in extent and of a smaller radius. The arcuate portions 18 and 1! are connected by straight portions 19 and Bi. The contour of the aperture 16 is such that the notch 51 in the spindle bar straddles the disc66 and holds the spindle bar against displacement to any substantial extent. The spindle bar is free to remain stationary until the cylinder barrel 31 has turned approximately a quarter turn either way from its central position. After a q iarter turn, one face or the other of the portion of the spindle bar opposite the notch 61 is engaged by the face 19 or the face 8| so that further rotation of the cylinder barrel 31 is imparted to the spindle bar 52.

In practice, the actuator key 34 is normally turned about a half turn. For the first quarter turn, the cylinder barrel 3'! moves idly with respect to the spindle bar but for the next quarter turn the cylinder barrel drives the spindle bar through a comparable quarter turn. When the actuator unit 32 is installed, it is positioned so that the spindle bar 52 extends into and through the central boss 24 of the crank 23. This boss is an interrupted annulus so that its cross section is non-circular, as especially shown in Figure 9. A spindle bar 52 in cross section in its extended portion is comparable to approximately half of the cross sectional contour of the interior of the boss 24 so that it occupies substantially half of the available space within the non-circular boss interior. If but a single actuator 32 is mounted in the door 1, operation of that actuator rotates its spindle bar 52 and correspondingly, and because of the non-circular interconnection, rotates the crank 23 to actuate the latch bolt l3. Whether the door is thin as in Figure 1 or is thick as in Figure 2, the spindle bar 52 projects into the boss 24. In the case of the thin door, there is surplus length-of spindle bar which extends beyond the crank boss 24. In the case of a thick door, there is adequate engagement for operation. In practice, the length of the spindle bar is made such that it can engage the crank boss 24 in any one of a large number of different positions depending entirely upon the thickness of the door, either with or without members 46 and 41.

Since the interior actuator 33 is comparable to the exterior actuator 32, it likewise is provided with a spindle bar 82 exactly like the spindle bar 52. The bar 82 fits into the non-circular boss 24 alongside the spindle bar 52 in an overlapping relationship therewith. There is a relative, sliding interengagement of the parts as the two spindle bars are inserted from opposite sides of the crank boss 24.

One or two actuators can be mounted upon a door of any one of a number of different thicknesses within a reasonable range, the actuators in all cases interengaging properly with the latch bolt and automatically accommodating themselves to the door thickness. The spindle bars are quite strong, being of a maximum cross section with respect to the available area of the crank boss, and are especially reenforced by a longitudinal rib. In the part of the spindle bar having the notch 61 to limit the axial motion, the thickness of the stock is approximately doubled. The spindle bar itself is a separate article of manufacture which can be individually provided in various lengths to be assembled with standard actuators if the range of door thicknesses greatly exceeds the usual range.

What is claimed is:

1. As an article of manufacture for a lock set, a spindle bar having a shank and having a disclike head at one end thereof, there being a notch in said shank adjacent said head, said shank being substantially rectangular in cross section and of a predetermined thickness in a first portion adjacent said notch and being substantially rectangular in cross section and of substantially half said thickness in a second portion remote from said notch, there being an integral rib in said second portion.

2. As an article of manufacture for a lock set, a spindle bar having a head at one end symmetrical about an axis and having a shank with one portion symmetrical about said axis and with another portion substantially rectangular in cross section and disposed at one side of said axis, said latter portion having a longitudinal rib outstanding from the side remote from said axis.

3. In a lock set including a lock unit adapted to be installed in a door and a crank for said lock unit having 'a non-circular aperture therein, driving means for said crank comprising a spindle bar having a cross sectional contour to fit substantially one-half of said aperture, a head on said spindle bar, there being a notch in said spindle bar adjacent to said head, a cylinder barrel for receiving said head, an apertured disc disposed adjacent said cylinder barrel overlying said head and extending into said notch, and a cup overlying said disc and engaging said cylinder barrel.

4. In a door lock set including a door lock unit and a crank for operating said unit formed with a noncircular aperture for receiving a driving device for turning said crank, operating means for said crank comprising: a pair of coaxial rotary operating members adapted to be secured to opposite sides of said door and respectively provided with operating spindles adapted to extend through said aperture. from opposite sides of said crank, said spindles being respectively formed at one of their ends with a cross sectional contour complementary to one half of said aperture whereby said one ends of said spindles fill said aperture, said spindles being connected at their other ends through a lost motion connection to said operating members respectively whereby either one of said members may be turned to actuate said crank without rotating the other member.

5. In a door lock set including a door lock unit and a crank for operating said unit formed with a non circular aperture for receiving a driving device for turning said crank, operating means for said crank comprising: a pair of coaxial rotary operating members adapted to be secured to opposite sides of said door and respectively provided with operating spindles adapted to extend through said aperture from opposite sides of said crank, said spindles being respectively formed at one of their ends with a cross sectional contour complementary to'one half of said aperture whereby said one ends of said spindles fills said aperture, said spindles being connected at their other ends through a lost motion connection to said operating members respectively whereby either one of said members may be turned to actuate said crank without rotating the other member, said lost motion connections comprising non circular axially directed openings in said members and non circular portions on said spindles adapted to be received in said openings and symmetrically disposed relative to the axis of said members.

6. In a door lock set including a door lock unit and a crank for operating said unit formed with a non circular aperture for receiving a driving device for turning said crank, operating means for said crank comprising: a pair of coaxial rotary operating members adapted to be secured to opposite sides of said door and respectively provided with operating spindles adapted to extend through said aperture from opposite sides of said crank, said spindles being respectively formed at one of their ends with a cross sectional contour complementary to one half of said aperture whereby said one ends of said spindles fills said aperture, said spindles being connected at their other ends through a lost motion connection to said operating members respectively whereby either one of said members may be turned to actuate said crank without rotating the other member, said lost motion connections comprising non circular axially directed openings in said members and non circular portions on said spindles adapted to be received in said openings and symmetrically disposed relative to the axis of said members, and said one ends of said spindles being disposed on the opposite sides of said axis.

References Cited in the file of this patent UNITED STATES PATENTS 

